/**
 * 获取单个字符的utf8编码
 * unicode BMP平面约65535个字符
 * @param {num} code
 * return {array}
 */
function unicodeFormat8(code) {
    // 1 byte
    var c0, c1, c2;
    if (code < 128) {
        return [code];
        // 2 bytes
    } else if (code < 2048) {
        c0 = 192 + (code >> 6);
        c1 = 128 + (code & 63);
        return [c0, c1];
        // 3 bytes
    } else {
        c0 = 224 + (code >> 12);
        c1 = 128 + (code >> 6 & 63);
        c2 = 128 + (code & 63);
        return [c0, c1, c2];
    }
}
/**
 * 获取字符串的utf8编码字节串
 * @param {string} string
 * @return {array}
 */
function getUTF8Bytes(string) {
    var utf8codes = [];
    for (var i = 0; i < string.length; i++) {
        var code = string.charCodeAt(i);
        var utf8 = unicodeFormat8(code);
        for (var j = 0; j < utf8.length; j++) {
            utf8codes.push(utf8[j]);
        }
    }
    return utf8codes;
}
/**
 * 二维码算法实现
 * @param {string} data              要编码的信息字符串
 * @param {num} errorCorrectLevel 纠错等级
 */
export default function QRCodeAlg(data, errorCorrectLevel) {
    this.typeNumber = -1; //版本
    this.errorCorrectLevel = errorCorrectLevel;
    this.modules = null; //二维矩阵，存放最终结果
    this.moduleCount = 0; //矩阵大小
    this.dataCache = null; //数据缓存
    this.rsBlocks = null; //版本数据信息
    this.totalDataCount = -1; //可使用的数据量
    this.data = data;
    this.utf8bytes = getUTF8Bytes(data);
    this.make();
}
QRCodeAlg.prototype = {
    constructor: QRCodeAlg,
    /**
     * 获取二维码矩阵大小
     * @return {num} 矩阵大小
     */
    getModuleCount: function () {
        return this.moduleCount;
    },
    /**
     * 编码
     */
    make: function () {
        this.getRightType();
        this.dataCache = this.createData();
        this.createQrcode();
    },
    /**
     * 设置二位矩阵功能图形
     * @param  {bool} test 表示是否在寻找最好掩膜阶段
     * @param  {num} maskPattern 掩膜的版本
     */
    makeImpl: function (maskPattern) {
        this.moduleCount = this.typeNumber * 4 + 17;
        this.modules = new Array(this.moduleCount);
        for (var row = 0; row < this.moduleCount; row++) {
            this.modules[row] = new Array(this.moduleCount);
        }
        this.setupPositionProbePattern(0, 0);
        this.setupPositionProbePattern(this.moduleCount - 7, 0);
        this.setupPositionProbePattern(0, this.moduleCount - 7);
        this.setupPositionAdjustPattern();
        this.setupTimingPattern();
        this.setupTypeInfo(true, maskPattern);
        if (this.typeNumber >= 7) {
            this.setupTypeNumber(true);
        }
        this.mapData(this.dataCache, maskPattern);
    },
    /**
     * 设置二维码的位置探测图形
     * @param  {num} row 探测图形的中心横坐标
     * @param  {num} col 探测图形的中心纵坐标
     */
    setupPositionProbePattern: function (row, col) {
        for (var r = -1; r <= 7; r++) {
            if (row + r <= -1 || this.moduleCount <= row + r) continue;
            for (var c = -1; c <= 7; c++) {
                if (col + c <= -1 || this.moduleCount <= col + c) continue;
                if ((0 <= r && r <= 6 && (c == 0 || c == 6)) || (0 <= c && c <= 6 && (r == 0 || r == 6)) || (2 <= r && r <= 4 && 2 <= c && c <= 4)) {
                    this.modules[row + r][col + c] = true;
                } else {
                    this.modules[row + r][col + c] = false;
                }
            }
        }
    },
    /**
     * 创建二维码
     * @return {[type]} [description]
     */
    createQrcode: function () {
        var minLostPoint = 0;
        var pattern = 0;
        var bestModules = null;
        for (var i = 0; i < 8; i++) {
            this.makeImpl(i);
            var lostPoint = QRUtil.getLostPoint(this);
            if (i == 0 || minLostPoint > lostPoint) {
                minLostPoint = lostPoint;
                pattern = i;
                bestModules = this.modules;
            }
        }
        this.modules = bestModules;
        this.setupTypeInfo(false, pattern);
        if (this.typeNumber >= 7) {
            this.setupTypeNumber(false);
        }
    },
    /**
     * 设置定位图形
     * @return {[type]} [description]
     */
    setupTimingPattern: function () {
        for (var r = 8; r < this.moduleCount - 8; r++) {
            if (this.modules[r][6] != null) {
                continue;
            }
            this.modules[r][6] = (r % 2 == 0);
            if (this.modules[6][r] != null) {
                continue;
            }
            this.modules[6][r] = (r % 2 == 0);
        }
    },
    /**
     * 设置矫正图形
     * @return {[type]} [description]
     */
    setupPositionAdjustPattern: function () {
        var pos = QRUtil.getPatternPosition(this.typeNumber);
        for (var i = 0; i < pos.length; i++) {
            for (var j = 0; j < pos.length; j++) {
                var row = pos[i];
                var col = pos[j];
                if (this.modules[row][col] != null) {
                    continue;
                }
                for (var r = -2; r <= 2; r++) {
                    for (var c = -2; c <= 2; c++) {
                        if (r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
                            this.modules[row + r][col + c] = true;
                        } else {
                            this.modules[row + r][col + c] = false;
                        }
                    }
                }
            }
        }
    },
    /**
     * 设置版本信息（7以上版本才有）
     * @param  {bool} test 是否处于判断最佳掩膜阶段
     * @return {[type]}      [description]
     */
    setupTypeNumber: function (test) {
        var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
        for (var i = 0; i < 18; i++) {
            var mod = (!test && ((bits >> i) & 1) == 1);
            this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
            this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
        }
    },
    /**
     * 设置格式信息（纠错等级和掩膜版本）
     * @param  {bool} test
     * @param  {num} maskPattern 掩膜版本
     * @return {}
     */
    setupTypeInfo: function (test, maskPattern) {
        var data = (QRErrorCorrectLevel[this.errorCorrectLevel] << 3) | maskPattern;
        var bits = QRUtil.getBCHTypeInfo(data);
        // vertical
        for (var i = 0; i < 15; i++) {
            var mod = (!test && ((bits >> i) & 1) == 1);
            if (i < 6) {
                this.modules[i][8] = mod;
            } else if (i < 8) {
                this.modules[i + 1][8] = mod;
            } else {
                this.modules[this.moduleCount - 15 + i][8] = mod;
            }
            // horizontal
            var mod = (!test && ((bits >> i) & 1) == 1);
            if (i < 8) {
                this.modules[8][this.moduleCount - i - 1] = mod;
            } else if (i < 9) {
                this.modules[8][15 - i - 1 + 1] = mod;
            } else {
                this.modules[8][15 - i - 1] = mod;
            }
        }
        // fixed module
        this.modules[this.moduleCount - 8][8] = (!test);
    },
    /**
     * 数据编码
     * @return {[type]} [description]
     */
    createData: function () {
        var buffer = new QRBitBuffer();
        var lengthBits = this.typeNumber > 9 ? 16 : 8;
        buffer.put(4, 4); //添加模式
        buffer.put(this.utf8bytes.length, lengthBits);
        for (var i = 0, l = this.utf8bytes.length; i < l; i++) {
            buffer.put(this.utf8bytes[i], 8);
        }
        if (buffer.length + 4 <= this.totalDataCount * 8) {
            buffer.put(0, 4);
        }
        // padding
        while (buffer.length % 8 != 0) {
            buffer.putBit(false);
        }
        // padding
        while (true) {
            if (buffer.length >= this.totalDataCount * 8) {
                break;
            }
            buffer.put(QRCodeAlg.PAD0, 8);
            if (buffer.length >= this.totalDataCount * 8) {
                break;
            }
            buffer.put(QRCodeAlg.PAD1, 8);
        }
        return this.createBytes(buffer);
    },
    /**
     * 纠错码编码
     * @param  {buffer} buffer 数据编码
     * @return {[type]}
     */
    createBytes: function (buffer) {
        var offset = 0;
        var maxDcCount = 0;
        var maxEcCount = 0;
        var length = this.rsBlock.length / 3;
        var rsBlocks = new Array();
        for (var i = 0; i < length; i++) {
            var count = this.rsBlock[i * 3 + 0];
            var totalCount = this.rsBlock[i * 3 + 1];
            var dataCount = this.rsBlock[i * 3 + 2];
            for (var j = 0; j < count; j++) {
                rsBlocks.push([dataCount, totalCount]);
            }
        }
        var dcdata = new Array(rsBlocks.length);
        var ecdata = new Array(rsBlocks.length);
        for (var r = 0; r < rsBlocks.length; r++) {
            var dcCount = rsBlocks[r][0];
            var ecCount = rsBlocks[r][1] - dcCount;
            maxDcCount = Math.max(maxDcCount, dcCount);
            maxEcCount = Math.max(maxEcCount, ecCount);
            dcdata[r] = new Array(dcCount);
            for (var i = 0; i < dcdata[r].length; i++) {
                dcdata[r][i] = 0xff & buffer.buffer[i + offset];
            }
            offset += dcCount;
            var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
            var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
            var modPoly = rawPoly.mod(rsPoly);
            ecdata[r] = new Array(rsPoly.getLength() - 1);
            for (var i = 0; i < ecdata[r].length; i++) {
                var modIndex = i + modPoly.getLength() - ecdata[r].length;
                ecdata[r][i] = (modIndex >= 0) ? modPoly.get(modIndex) : 0;
            }
        }
        var data = new Array(this.totalDataCount);
        var index = 0;
        for (var i = 0; i < maxDcCount; i++) {
            for (var r = 0; r < rsBlocks.length; r++) {
                if (i < dcdata[r].length) {
                    data[index++] = dcdata[r][i];
                }
            }
        }
        for (var i = 0; i < maxEcCount; i++) {
            for (var r = 0; r < rsBlocks.length; r++) {
                if (i < ecdata[r].length) {
                    data[index++] = ecdata[r][i];
                }
            }
        }
        return data;

    },
    /**
     * 布置模块，构建最终信息
     * @param  {} data
     * @param  {} maskPattern
     * @return {}
     */
    mapData: function (data, maskPattern) {
        var inc = -1;
        var row = this.moduleCount - 1;
        var bitIndex = 7;
        var byteIndex = 0;
        for (var col = this.moduleCount - 1; col > 0; col -= 2) {
            if (col == 6) col--;
            while (true) {
                for (var c = 0; c < 2; c++) {
                    if (this.modules[row][col - c] == null) {
                        var dark = false;
                        if (byteIndex < data.length) {
                            dark = (((data[byteIndex] >>> bitIndex) & 1) == 1);
                        }
                        var mask = QRUtil.getMask(maskPattern, row, col - c);
                        if (mask) {
                            dark = !dark;
                        }
                        this.modules[row][col - c] = dark;
                        bitIndex--;
                        if (bitIndex == -1) {
                            byteIndex++;
                            bitIndex = 7;
                        }
                    }
                }
                row += inc;
                if (row < 0 || this.moduleCount <= row) {
                    row -= inc;
                    inc = -inc;
                    break;
                }
            }
        }
    }
};
/**
 * 填充字段
 */
QRCodeAlg.PAD0 = 0xEC;
QRCodeAlg.PAD1 = 0x11;
//---------------------------------------------------------------------
// 纠错等级对应的编码
//---------------------------------------------------------------------
var QRErrorCorrectLevel = [1, 0, 3, 2];
//---------------------------------------------------------------------
// 掩膜版本
//---------------------------------------------------------------------
var QRMaskPattern = {
    PATTERN000: 0,
    PATTERN001: 1,
    PATTERN010: 2,
    PATTERN011: 3,
    PATTERN100: 4,
    PATTERN101: 5,
    PATTERN110: 6,
    PATTERN111: 7
};
//---------------------------------------------------------------------
// 工具类
//---------------------------------------------------------------------
var QRUtil = {
    /*
    每个版本矫正图形的位置
        */
    PATTERN_POSITION_TABLE: [
        [],
        [6, 18],
        [6, 22],
        [6, 26],
        [6, 30],
        [6, 34],
        [6, 22, 38],
        [6, 24, 42],
        [6, 26, 46],
        [6, 28, 50],
        [6, 30, 54],
        [6, 32, 58],
        [6, 34, 62],
        [6, 26, 46, 66],
        [6, 26, 48, 70],
        [6, 26, 50, 74],
        [6, 30, 54, 78],
        [6, 30, 56, 82],
        [6, 30, 58, 86],
        [6, 34, 62, 90],
        [6, 28, 50, 72, 94],
        [6, 26, 50, 74, 98],
        [6, 30, 54, 78, 102],
        [6, 28, 54, 80, 106],
        [6, 32, 58, 84, 110],
        [6, 30, 58, 86, 114],
        [6, 34, 62, 90, 118],
        [6, 26, 50, 74, 98, 122],
        [6, 30, 54, 78, 102, 126],
        [6, 26, 52, 78, 104, 130],
        [6, 30, 56, 82, 108, 134],
        [6, 34, 60, 86, 112, 138],
        [6, 30, 58, 86, 114, 142],
        [6, 34, 62, 90, 118, 146],
        [6, 30, 54, 78, 102, 126, 150],
        [6, 24, 50, 76, 102, 128, 154],
        [6, 28, 54, 80, 106, 132, 158],
        [6, 32, 58, 84, 110, 136, 162],
        [6, 26, 54, 82, 110, 138, 166],
        [6, 30, 58, 86, 114, 142, 170]
    ],
    G15: (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
    G18: (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
    G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),
    /*
    BCH编码格式信息
        */
    getBCHTypeInfo: function (data) {
        var d = data << 10;
        while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
            d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15)));
        }
        return ((data << 10) | d) ^ QRUtil.G15_MASK;
    },
    /*
    BCH编码版本信息
        */
    getBCHTypeNumber: function (data) {
        var d = data << 12;
        while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
            d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18)));
        }
        return (data << 12) | d;
    },
    /*
    获取BCH位信息
        */
    getBCHDigit: function (data) {
        var digit = 0;
        while (data != 0) {
            digit++;
            data >>>= 1;
        }
        return digit;
    },
    /*
    获取版本对应的矫正图形位置
        */
    getPatternPosition: function (typeNumber) {
        return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
    },
    /*
    掩膜算法
        */
    getMask: function (maskPattern, i, j) {
        switch (maskPattern) {
            case QRMaskPattern.PATTERN000:
                return (i + j) % 2 == 0;
            case QRMaskPattern.PATTERN001:
                return i % 2 == 0;
            case QRMaskPattern.PATTERN010:
                return j % 3 == 0;
            case QRMaskPattern.PATTERN011:
                return (i + j) % 3 == 0;
            case QRMaskPattern.PATTERN100:
                return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
            case QRMaskPattern.PATTERN101:
                return (i * j) % 2 + (i * j) % 3 == 0;
            case QRMaskPattern.PATTERN110:
                return ((i * j) % 2 + (i * j) % 3) % 2 == 0;
            case QRMaskPattern.PATTERN111:
                return ((i * j) % 3 + (i + j) % 2) % 2 == 0;
            default:
                throw new Error("bad maskPattern:" + maskPattern);
        }
    },
    /*
    获取RS的纠错多项式
        */
    getErrorCorrectPolynomial: function (errorCorrectLength) {
        var a = new QRPolynomial([1], 0);
        for (var i = 0; i < errorCorrectLength; i++) {
            a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0));
        }
        return a;
    },
    /*
    获取评价
        */
    getLostPoint: function (qrCode) {
        var moduleCount = qrCode.getModuleCount(),
            lostPoint = 0,
            darkCount = 0;
        for (var row = 0; row < moduleCount; row++) {
            var sameCount = 0;
            var head = qrCode.modules[row][0];
            for (var col = 0; col < moduleCount; col++) {
                var current = qrCode.modules[row][col];
                //level 3 评价
                if (col < moduleCount - 6) {
                    if (current && !qrCode.modules[row][col + 1] && qrCode.modules[row][col + 2] && qrCode.modules[row][col + 3] && qrCode.modules[row][col + 4] && !qrCode.modules[row][col + 5] && qrCode.modules[row][col + 6]) {
                        if (col < moduleCount - 10) {
                            if (qrCode.modules[row][col + 7] && qrCode.modules[row][col + 8] && qrCode.modules[row][col + 9] && qrCode.modules[row][col + 10]) {
                                lostPoint += 40;
                            }
                        } else if (col > 3) {
                            if (qrCode.modules[row][col - 1] && qrCode.modules[row][col - 2] && qrCode.modules[row][col - 3] && qrCode.modules[row][col - 4]) {
                                lostPoint += 40;
                            }
                        }
                    }
                }
                //level 2 评价
                if ((row < moduleCount - 1) && (col < moduleCount - 1)) {
                    var count = 0;
                    if (current) count++;
                    if (qrCode.modules[row + 1][col]) count++;
                    if (qrCode.modules[row][col + 1]) count++;
                    if (qrCode.modules[row + 1][col + 1]) count++;
                    if (count == 0 || count == 4) {
                        lostPoint += 3;
                    }
                }
                //level 1 评价
                if (head ^ current) {
                    sameCount++;
                } else {
                    head = current;
                    if (sameCount >= 5) {
                        lostPoint += (3 + sameCount - 5);
                    }
                    sameCount = 1;
                }
                //level 4 评价
                if (current) {
                    darkCount++;
                }
            }
        }
        for (var col = 0; col < moduleCount; col++) {
            var sameCount = 0;
            var head = qrCode.modules[0][col];
            for (var row = 0; row < moduleCount; row++) {
                var current = qrCode.modules[row][col];
                //level 3 评价
                if (row < moduleCount - 6) {
                    if (current && !qrCode.modules[row + 1][col] && qrCode.modules[row + 2][col] && qrCode.modules[row + 3][col] && qrCode.modules[row + 4][col] && !qrCode.modules[row + 5][col] && qrCode.modules[row + 6][col]) {
                        if (row < moduleCount - 10) {
                            if (qrCode.modules[row + 7][col] && qrCode.modules[row + 8][col] && qrCode.modules[row + 9][col] && qrCode.modules[row + 10][col]) {
                                lostPoint += 40;
                            }
                        } else if (row > 3) {
                            if (qrCode.modules[row - 1][col] && qrCode.modules[row - 2][col] && qrCode.modules[row - 3][col] && qrCode.modules[row - 4][col]) {
                                lostPoint += 40;
                            }
                        }
                    }
                }
                //level 1 评价
                if (head ^ current) {
                    sameCount++;
                } else {
                    head = current;
                    if (sameCount >= 5) {
                        lostPoint += (3 + sameCount - 5);
                    }
                    sameCount = 1;
                }
            }
        }
        // LEVEL4
        var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
        lostPoint += ratio * 10;
        return lostPoint;
    }

};
//---------------------------------------------------------------------
// QRMath使用的数学工具
//---------------------------------------------------------------------
var QRMath = {
    /*
    将n转化为a^m
        */
    glog: function (n) {
        if (n < 1) {
            throw new Error("glog(" + n + ")");
        }
        return QRMath.LOG_TABLE[n];
    },
    /*
    将a^m转化为n
        */
    gexp: function (n) {
        while (n < 0) {
            n += 255;
        }
        while (n >= 256) {
            n -= 255;
        }
        return QRMath.EXP_TABLE[n];
    },
    EXP_TABLE: new Array(256),
    LOG_TABLE: new Array(256)

};
for (var i = 0; i < 8; i++) {
    QRMath.EXP_TABLE[i] = 1 << i;
}
for (var i = 8; i < 256; i++) {
    QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8];
}
for (var i = 0; i < 255; i++) {
    QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
}
//---------------------------------------------------------------------
// QRPolynomial 多项式
//---------------------------------------------------------------------
/**
 * 多项式类
 * @param {Array} num   系数
 * @param {num} shift a^shift
 */
function QRPolynomial(num, shift) {
    if (num.length == undefined) {
        throw new Error(num.length + "/" + shift);
    }
    var offset = 0;
    while (offset < num.length && num[offset] == 0) {
        offset++;
    }
    this.num = new Array(num.length - offset + shift);
    for (var i = 0; i < num.length - offset; i++) {
        this.num[i] = num[i + offset];
    }
}
QRPolynomial.prototype = {
    get: function (index) {
        return this.num[index];
    },
    getLength: function () {
        return this.num.length;
    },
    /**
     * 多项式乘法
     * @param  {QRPolynomial} e 被乘多项式
     * @return {[type]}   [description]
     */
    multiply: function (e) {
        var num = new Array(this.getLength() + e.getLength() - 1);
        for (var i = 0; i < this.getLength(); i++) {
            for (var j = 0; j < e.getLength(); j++) {
                num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i)) + QRMath.glog(e.get(j)));
            }
        }
        return new QRPolynomial(num, 0);
    },
    /**
     * 多项式模运算
     * @param  {QRPolynomial} e 模多项式
     * @return {}
     */
    mod: function (e) {
        var tl = this.getLength(),
            el = e.getLength();
        if (tl - el < 0) {
            return this;
        }
        var num = new Array(tl);
        for (var i = 0; i < tl; i++) {
            num[i] = this.get(i);
        }
        while (num.length >= el) {
            var ratio = QRMath.glog(num[0]) - QRMath.glog(e.get(0));

            for (var i = 0; i < e.getLength(); i++) {
                num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio);
            }
            while (num[0] == 0) {
                num.shift();
            }
        }
        return new QRPolynomial(num, 0);
    }
};

//---------------------------------------------------------------------
// RS_BLOCK_TABLE
//---------------------------------------------------------------------
/*
二维码各个版本信息[块数, 每块中的数据块数, 每块中的信息块数]
    */
var RS_BLOCK_TABLE = [
    // L
    // M
    // Q
    // H
    // 1
    [1, 26, 19],
    [1, 26, 16],
    [1, 26, 13],
    [1, 26, 9],

    // 2
    [1, 44, 34],
    [1, 44, 28],
    [1, 44, 22],
    [1, 44, 16],

    // 3
    [1, 70, 55],
    [1, 70, 44],
    [2, 35, 17],
    [2, 35, 13],

    // 4
    [1, 100, 80],
    [2, 50, 32],
    [2, 50, 24],
    [4, 25, 9],

    // 5
    [1, 134, 108],
    [2, 67, 43],
    [2, 33, 15, 2, 34, 16],
    [2, 33, 11, 2, 34, 12],

    // 6
    [2, 86, 68],
    [4, 43, 27],
    [4, 43, 19],
    [4, 43, 15],

    // 7
    [2, 98, 78],
    [4, 49, 31],
    [2, 32, 14, 4, 33, 15],
    [4, 39, 13, 1, 40, 14],

    // 8
    [2, 121, 97],
    [2, 60, 38, 2, 61, 39],
    [4, 40, 18, 2, 41, 19],
    [4, 40, 14, 2, 41, 15],

    // 9
    [2, 146, 116],
    [3, 58, 36, 2, 59, 37],
    [4, 36, 16, 4, 37, 17],
    [4, 36, 12, 4, 37, 13],

    // 10
    [2, 86, 68, 2, 87, 69],
    [4, 69, 43, 1, 70, 44],
    [6, 43, 19, 2, 44, 20],
    [6, 43, 15, 2, 44, 16],

    // 11
    [4, 101, 81],
    [1, 80, 50, 4, 81, 51],
    [4, 50, 22, 4, 51, 23],
    [3, 36, 12, 8, 37, 13],

    // 12
    [2, 116, 92, 2, 117, 93],
    [6, 58, 36, 2, 59, 37],
    [4, 46, 20, 6, 47, 21],
    [7, 42, 14, 4, 43, 15],

    // 13
    [4, 133, 107],
    [8, 59, 37, 1, 60, 38],
    [8, 44, 20, 4, 45, 21],
    [12, 33, 11, 4, 34, 12],

    // 14
    [3, 145, 115, 1, 146, 116],
    [4, 64, 40, 5, 65, 41],
    [11, 36, 16, 5, 37, 17],
    [11, 36, 12, 5, 37, 13],

    // 15
    [5, 109, 87, 1, 110, 88],
    [5, 65, 41, 5, 66, 42],
    [5, 54, 24, 7, 55, 25],
    [11, 36, 12],

    // 16
    [5, 122, 98, 1, 123, 99],
    [7, 73, 45, 3, 74, 46],
    [15, 43, 19, 2, 44, 20],
    [3, 45, 15, 13, 46, 16],

    // 17
    [1, 135, 107, 5, 136, 108],
    [10, 74, 46, 1, 75, 47],
    [1, 50, 22, 15, 51, 23],
    [2, 42, 14, 17, 43, 15],

    // 18
    [5, 150, 120, 1, 151, 121],
    [9, 69, 43, 4, 70, 44],
    [17, 50, 22, 1, 51, 23],
    [2, 42, 14, 19, 43, 15],

    // 19
    [3, 141, 113, 4, 142, 114],
    [3, 70, 44, 11, 71, 45],
    [17, 47, 21, 4, 48, 22],
    [9, 39, 13, 16, 40, 14],

    // 20
    [3, 135, 107, 5, 136, 108],
    [3, 67, 41, 13, 68, 42],
    [15, 54, 24, 5, 55, 25],
    [15, 43, 15, 10, 44, 16],

    // 21
    [4, 144, 116, 4, 145, 117],
    [17, 68, 42],
    [17, 50, 22, 6, 51, 23],
    [19, 46, 16, 6, 47, 17],

    // 22
    [2, 139, 111, 7, 140, 112],
    [17, 74, 46],
    [7, 54, 24, 16, 55, 25],
    [34, 37, 13],

    // 23
    [4, 151, 121, 5, 152, 122],
    [4, 75, 47, 14, 76, 48],
    [11, 54, 24, 14, 55, 25],
    [16, 45, 15, 14, 46, 16],

    // 24
    [6, 147, 117, 4, 148, 118],
    [6, 73, 45, 14, 74, 46],
    [11, 54, 24, 16, 55, 25],
    [30, 46, 16, 2, 47, 17],

    // 25
    [8, 132, 106, 4, 133, 107],
    [8, 75, 47, 13, 76, 48],
    [7, 54, 24, 22, 55, 25],
    [22, 45, 15, 13, 46, 16],

    // 26
    [10, 142, 114, 2, 143, 115],
    [19, 74, 46, 4, 75, 47],
    [28, 50, 22, 6, 51, 23],
    [33, 46, 16, 4, 47, 17],

    // 27
    [8, 152, 122, 4, 153, 123],
    [22, 73, 45, 3, 74, 46],
    [8, 53, 23, 26, 54, 24],
    [12, 45, 15, 28, 46, 16],

    // 28
    [3, 147, 117, 10, 148, 118],
    [3, 73, 45, 23, 74, 46],
    [4, 54, 24, 31, 55, 25],
    [11, 45, 15, 31, 46, 16],

    // 29
    [7, 146, 116, 7, 147, 117],
    [21, 73, 45, 7, 74, 46],
    [1, 53, 23, 37, 54, 24],
    [19, 45, 15, 26, 46, 16],

    // 30
    [5, 145, 115, 10, 146, 116],
    [19, 75, 47, 10, 76, 48],
    [15, 54, 24, 25, 55, 25],
    [23, 45, 15, 25, 46, 16],

    // 31
    [13, 145, 115, 3, 146, 116],
    [2, 74, 46, 29, 75, 47],
    [42, 54, 24, 1, 55, 25],
    [23, 45, 15, 28, 46, 16],

    // 32
    [17, 145, 115],
    [10, 74, 46, 23, 75, 47],
    [10, 54, 24, 35, 55, 25],
    [19, 45, 15, 35, 46, 16],

    // 33
    [17, 145, 115, 1, 146, 116],
    [14, 74, 46, 21, 75, 47],
    [29, 54, 24, 19, 55, 25],
    [11, 45, 15, 46, 46, 16],

    // 34
    [13, 145, 115, 6, 146, 116],
    [14, 74, 46, 23, 75, 47],
    [44, 54, 24, 7, 55, 25],
    [59, 46, 16, 1, 47, 17],

    // 35
    [12, 151, 121, 7, 152, 122],
    [12, 75, 47, 26, 76, 48],
    [39, 54, 24, 14, 55, 25],
    [22, 45, 15, 41, 46, 16],

    // 36
    [6, 151, 121, 14, 152, 122],
    [6, 75, 47, 34, 76, 48],
    [46, 54, 24, 10, 55, 25],
    [2, 45, 15, 64, 46, 16],

    // 37
    [17, 152, 122, 4, 153, 123],
    [29, 74, 46, 14, 75, 47],
    [49, 54, 24, 10, 55, 25],
    [24, 45, 15, 46, 46, 16],

    // 38
    [4, 152, 122, 18, 153, 123],
    [13, 74, 46, 32, 75, 47],
    [48, 54, 24, 14, 55, 25],
    [42, 45, 15, 32, 46, 16],

    // 39
    [20, 147, 117, 4, 148, 118],
    [40, 75, 47, 7, 76, 48],
    [43, 54, 24, 22, 55, 25],
    [10, 45, 15, 67, 46, 16],

    // 40
    [19, 148, 118, 6, 149, 119],
    [18, 75, 47, 31, 76, 48],
    [34, 54, 24, 34, 55, 25],
    [20, 45, 15, 61, 46, 16]
];

/**
 * 根据数据获取对应版本
 * @return {[type]} [description]
 */
QRCodeAlg.prototype.getRightType = function () {
    for (var typeNumber = 1; typeNumber < 41; typeNumber++) {
        var rsBlock = RS_BLOCK_TABLE[(typeNumber - 1) * 4 + this.errorCorrectLevel];
        if (rsBlock == undefined) {
            throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + this.errorCorrectLevel);
        }
        var length = rsBlock.length / 3;
        var totalDataCount = 0;
        for (var i = 0; i < length; i++) {
            var count = rsBlock[i * 3 + 0];
            var dataCount = rsBlock[i * 3 + 2];
            totalDataCount += dataCount * count;
        }
        var lengthBytes = typeNumber > 9 ? 2 : 1;
        if (this.utf8bytes.length + lengthBytes < totalDataCount || typeNumber == 40) {
            this.typeNumber = typeNumber;
            this.rsBlock = rsBlock;
            this.totalDataCount = totalDataCount;
            break;
        }
    }
};

//---------------------------------------------------------------------
// QRBitBuffer
//---------------------------------------------------------------------
function QRBitBuffer() {
    this.buffer = new Array();
    this.length = 0;
}
QRBitBuffer.prototype = {
    get: function (index) {
        var bufIndex = Math.floor(index / 8);
        return ((this.buffer[bufIndex] >>> (7 - index % 8)) & 1);
    },
    put: function (num, length) {
        for (var i = 0; i < length; i++) {
            this.putBit(((num >>> (length - i - 1)) & 1));
        }
    },
    putBit: function (bit) {
        var bufIndex = Math.floor(this.length / 8);
        if (this.buffer.length <= bufIndex) {
            this.buffer.push(0);
        }
        if (bit) {
            this.buffer[bufIndex] |= (0x80 >>> (this.length % 8));
        }
        this.length++;
    }
};



// // xzedit
// let qrcodeAlgObjCache = []
// /**
//  * 二维码构造函数，主要用于绘制
//  * @param  {参数列表} opt 传递参数
//  * @return {}
//  */
// this.options = {
//     text: '',
//     size: 256,
//     correctLevel: 3,
//     background: '#ffffff',
//     foreground: '#000000',
//     pdground: '#000000',
//     image: '',
//     imageSize: 30,
// }
// //使用QRCodeAlg创建二维码结构
// let qrCodeAlg = null
// let l = qrcodeAlgObjCache.length
// let i
// for (i = 0;i < l; i++) {
//     if (qrcodeAlgObjCache[i].text == this.options.text && qrcodeAlgObjCache[i].text.correctLevel == this.options.correctLevel) {
//         qrCodeAlg = qrcodeAlgObjCache[i].obj
//         break
//     }
// }
// if (i == l) {
//     qrCodeAlg = new QRCodeAlg(this.options.text, this.options.correctLevel)
//     qrcodeAlgObjCache.push({
//         text: this.options.text,
//         correctLevel: this.options.correctLevel,
//         obj: qrCodeAlg
//     })
// }
// /**
//  * 计算矩阵点的前景色
//  * @param {Obj} config
//  * @param {Number} config.row 点x坐标
//  * @param {Number} config.col 点y坐标
//  * @param {Number} config.count 矩阵大小
//  * @param {Number} config.options 组件的options
//  * @return {String}
//  */
// let getForeGround = function (config) {
//     var options = config.options
//     if (options.pdground && (
//         (config.row > 1 && config.row < 5 && config.col > 1 && config.col < 5) ||
//         (config.row > (config.count - 6) && config.row < (config.count - 2) && config.col > 1 && config.col < 5) ||
//         (config.row > 1 && config.row < 5 && config.col > (config.count - 6) && config.col < (config.count - 2))
//     )) {
//         return options.pdground
//     }
//     return options.foreground
// }
// let count = qrCodeAlg.getModuleCount()
// let ratioSize = options.size
// let ratioImgSize = options.imageSize
// //计算每个点的长宽
// let tileW = (ratioSize / count).toPrecision(4)
// let tileH = (ratioSize / count).toPrecision(4)
// //绘制
// for (let row = 0; row < count; row++) {
//     for (var col = 0; col < count; col++) {
//         var w = (Math.ceil((col + 1) * tileW) - Math.floor(col * tileW))
//         var h = (Math.ceil((row + 1) * tileW) - Math.floor(row * tileW))
//         var foreground = getForeGround({
//             row: row,
//             col: col,
//             count: count,
//             options: options
//         })
//         ctx.setFillStyle(qrCodeAlg.modules[row][col] ? foreground : options.background)
//         ctx.fillRect(Math.round(col * tileW), Math.round(row * tileH), w, h)
//     }
// }
